"buk, buk, bukka!" [ male announcer ] get the spark business card from capital one and earn unlimited rewards. choose 2% cash back or double miles on every purchase every day. told you i'd get half. what's in your wallet? >>> welcome back to "worldwide exchange." police are telling nbc the streets of watertown, massachusetts, littered with unexploded devices. depending on their ability to render them safe and to arrest the second suspect, who is not only a suspect of course in what took place last night beginning with the shooting and armory in cambridge, massachusetts, leading now to watertown, massachusetts, and the suspect involved in the boston marathon bombings. in any case, one has been killed. the second suspect on the loose in the area. so, again, to reiterate, police are saying given the unexploded devices and the ability to arrest the second suspect, they may freeze transit in the watertown area and potentially lockdown the town and its ajou joining area. a decision has not been made yet. earl